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Double block and bleed (DBB) is the practice of shutting in a section of pipe on both sides of a valve when you are performing maintenance or repair.

Close the isolation ball valves on both the upstream and downstream sides of the valve you’re working on. Then use one of three ways to bleed any remaining pressure upstream and downstream of the valve.
-Isolation Ball Valves
-Needle Valves

To schedule in-person product demos for you and your team, visit kimray.com/training.

0:00 Intro & Disclaimer
0:26 Shutting in a section of pipe (blocking)
0:55 Bleeding pressure with needle valves
1:14 Bleeding pressure with isolation ball valves
1:36 Expanding where your blocks are
1:10 The weep hole
2:47 Sources of pressure
3:08 Schedule in-person demos

Leave a comment below if you have any questions! Some question can be answered online, but for detailed technical support, email prodtechsupport@kimray.com and mention which video you're referencing.

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